[1] T. Kaluza, “Zum Unitatsproblem in der Physik,” Sitzungsberichte der Koniglich Preußischen Akademie der Wissenschaften, 1921, pp. 966-972.
[2] O. Klein, Zeitschrift für Physik, Vol. 37, 1926, pp. 895-906. http://dx.doi.org/10.1007/BF01397481
[3] C. Gauthier and P. Gravel, Canadian Journal of Physics, Vol. 68, 1990, pp. 385-387.
http://dx.doi.org/10.1139/p90-061
[4] C. Gauthier and P. Gravel, Nuovo Cimento A, Vol. 104, 1991, pp. 325-336.
http://dx.doi.org/10.1007/BF02799141
[5] O. Ben Khalifa and C. Gauthier, Central European Journal of Physics, Vol. 5, 2007, pp. 151-164.
http://dx.doi.org/10.2478/s11534-007-0002-0
[6] L. Schwartz, “Théorie des Distributions,” Hermann, Paris, 1978.
[7] J. Overduin and P. Wesson, Physics Reports, Vol. 283, 1997, pp. 303-380.
http://dx.doi.org/10.1016/S0370-1573(96)00046-4